Per the instructions, start by removing the last digit from each number, so 136 turns into 13, 211 turns into 21 and so on. You should now have a list of 50 two-digit numbers, ranging from 12 to 49.

Next, divide the 50 numbers into four groups, with numbers 12-14 in the first group, 15-19 in the second, 20-24 in the third, 25-29 in the fourth, 31-34 in the fifth, 36-38 in the sixth, 40-44 in the seventh and 47-49 in the last group.

Since this is a stretched stem and leaf chart, set up the chart with two ones, two twos, two threes and two fours, as follows:

1 |
1 |
2 |
2 |
3 |
3 |
4 |
4 |

Now add each group of numbers to the chart. Since we have already separated the numbers into groups o which stem they will go on, adding them should be quick and easy. Add the first group to the first stem, the second group to the second stem, and so on through the eighth stem. You should come to something like this:

1 | 234
1 | 556667778889999
2 | 01111223334444
2 | 566789
3 | 1234
3 | 668
4 | 034
4 | 79

Now that you have your chart set up, finding the frequency of the third stem:

2 | 01111223334444

is up to you!

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